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Molded Case Circuit Breaker

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Molded Case Circuit Breaker

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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.

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Part Number	PRICE	Manufacturer	Amperage	Voltage
Q330H	In Stock From $75^.63	Siemens	30	240
Q330HH	In Stock From $180^.96	Siemens	30	240
Q34000S07	In Stock From $116^.02	Siemens	40	240
Q340H	In Stock From $97^.56	Siemens	40	240
Q345	In Stock From $64^.69	Siemens	45	240
Q345H	In Stock From $119^.79	Siemens	45	240
Q35000S01	In Stock From $193^.47	Siemens	50	240
Q350H	In Stock From $108^.71	Siemens	50	240
Q37000S01	In Stock From $223^.66	Siemens	70	240
Q370H	In Stock From $95^.07	Siemens	70	240
Q38000S01	In Stock From $246^.79	Siemens	80	240
Q380H	In Stock From $130^.44	Siemens	80	240
Q390H	In Stock From $140^.01	Siemens	90	240
Q4L2250	In Stock From $1,090^.42	Square D	250	240
Q4L2350	In Stock From $641^.20	Square D	350	240
Q4L2400	In Stock From $1,033^.89	Square D	400	240
Q4L3250	In Stock From $599^.88	Square D	250	240
Q4L3350	In Stock From $1,028^.03	Square D	350	240
QA120AFCCSA	In Stock From $438^.59	Siemens	20	120
QBA221753	In Stock From $152^.09	Square D	175	240
QBA321006	In Stock From $458^.50	Square D	100	240
QBA321256	In Stock From $406^.24	Square D	125	240
QBA321756	In Stock From $474^.04	Square D	175	240
QBA322256	In Stock From $408^.85	Square D	225	240

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Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.

Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.